Got engine and carb rebuilt. New gas, distributor cap, plug wires and plugs. Rotor is pointing to number 1 and car is set at top dead center. Cranks over fine and has a sputter once in a while. Getting gas to the carb no problem and coil has good spark when tested (blue spark). Gap is set to .014 on the points. Firing order is correct. So I'm not sure what it could be. Any suggestions?